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arXiv · 1505.07162

Needed Computations Shortcutting Needed Steps

Sergio Antoy·Jacob Johannsen·Steven Libby
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Abstract

We define a compilation scheme for a constructor-based, strongly-sequential, graph rewriting system which shortcuts some needed steps. The object code is another constructor-based graph rewriting system. This system is normalizing for the original system when using an innermost strategy. Consequently, the object code can be easily implemented by eager functions in a variety of programming languages. We modify this object code in a way that avoids total or partial construction of the contracta of some needed steps of a computation. When computing normal forms in this way, both memory consumption and execution time are reduced compared to ordinary rewriting computations in the original system.

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Sergio Antoy, Jacob Johannsen, Steven Libby. 2015-05-27. Needed Computations Shortcutting Needed Steps. https://doi.org/10.4204/eptcs.183.2

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